UNI-T UT502A Insulation Resistance Meter 50V-1000V 5.5GΩ

The UNI-T UT502A is a professional insulation resistance meter designed for testing electrical installations, motors, cables, and transformers. It offers five test voltages (50V, 100V, 250V, 500V, 1000V) and measures insulation resistance up to 5.5 GΩ. With additional functions like AC/DC voltage measurement, resistance, continuity, PI, and DAR, this meter is a versatile tool for electricians and maintenance technicians.

Advantages

Wide insulation test voltage range from 50V to 1000V, high accuracy, large LCD backlit display, data storage for 100 groups, and robust safety rating CAT III 1000V / CAT IV 600V.

Suitable for

• Electrical installation testing
• Motor and generator insulation testing
• Cable and transformer maintenance
• Industrial and commercial electrical systems

Key specifications

• Insulation Test Voltages: 50V, 100V, 250V, 500V, 1000V
• Max Insulation Resistance: 5.5 GΩ (at 500V/1000V)
• Accuracy: ±(3%+5) for <100MΩ, ±(5%+5) for ≥100MΩ
• Short-Circuit Current: <1.8 mA
• DC Voltage: 0-1000V
• AC Voltage: 30-750V
• Resistance: 0.1Ω-6000Ω
• Continuity Test: Yes, buzzer <10Ω
• PI and DAR Measurement: Yes
• Display: LCD with backlight, 9999 counts
• Data Storage: 100 groups
• Power: 6 x 1.5V AA batteries
• Safety: CAT III 1000V, CAT IV 600V
• Auto Range: Yes
• Low Battery and Overload Indication: Yes
• Operating Temperature: 0°C to 40°C

Recommendations

For accurate insulation testing, always use test leads rated for the voltage. Ensure batteries are fresh for reliable operation. This meter is ideal for preventive maintenance and troubleshooting.